| 06:10.45 | *** join/#openjtag drath_ (i=vmaster@p5B07FA34.dip.t-dialin.net) |
| 11:07.10 | *** join/#openjtag davygravy (n=davygrav@h69-128-158-209.mdtnwi.dsl.dynamic.tds.net) |
| 12:44.11 | *** join/#openjtag prpplague^2 (n=dave@mail.americanmicrosystems.com) |
| 15:10.56 | prpplague | bjdooks: don't suppose you have current patches for the s3c24xx sdio stuff? |
| 15:17.40 | prpplague | bjdooks: nm, found your post |
| 15:26.03 | prpplague | bjdooks: hmm, you have a complete patchset posted somewhere other than the list? |
| 15:27.11 | *** join/#openjtag toma^ (n=toma@tuomi.oulu.fi) |
| 15:29.00 | toma^ | Hi. I was wondering if you guys could help me a bit with a probably very simple question: I have a bunch of old jtags for avr-boards. Can they be used to program and debug arm-boards? |
| 15:31.24 | toma^ | We're using ethernut 2 atm and we're thinking about upgrading to ethernut3 or EIR |
| 16:04.45 | bjdooks | prpplague: i've got to do a bit of work to test and refine the sdmmc set... |
| 16:14.53 | ali_as_ | toma, what voltage are they capable of? |
| 16:15.36 | ali_as_ | Are they simple LPT port buffer designs, or something more complicated? |
| 16:17.18 | toma^ | ali_as_: the old one seems to be 3-5v and the new one is 1.65V to 5.5V |
| 16:17.40 | toma^ | I can paste the direct urls too |
| 16:18.48 | toma^ | this is the old model: http://atomia.net/tuotteet.php?begin=1001&level=2&code=AVR-JTAG-USB |
| 16:19.02 | toma^ | and this one is the new one: http://www.ethernut.de/en/hardware/turtelizer/ |
| 16:23.01 | ali_as_ | The second claims to be supported by openocd, which will do ARM. The former may well work as well, you will need to try it so long as it supports the voltage. |
| 17:08.02 | toma^ | so basically the jtag itself doesn't include any fancy parts that would make it avr-only or arm-only? |
| 17:08.21 | toma^ | I don't really know about those things much |
| 17:12.53 | ali_as_ | They don't but attempts are sometimes made to make it incompatable. |
| 17:13.32 | toma^ | :/ |
| 17:13.55 | ali_as_ | Some JTAG interfaces cost upwards of $3000 US. |
| 17:14.09 | toma^ | ouch |
| 17:14.25 | toma^ | well, I don't think that's the case with egnite's products :) |
| 17:31.38 | drath_ | the AVR-JTAG-USB that Olimex sells (no idea if it's the same) is /NOT/ compatible with the OpenOCD |
| 17:31.47 | drath | the Turtelizer is compatible |
| 17:32.59 | drath | mhh, the device from atomia looks different, but they mention a COM port, so I suppose it's similar to the olimex device |
| 17:33.19 | toma^ | well, it was delivered in olimex's box :) |
| 17:33.56 | drath | AFAIK the AVR USB JTAGs include a FT232, not a FT2232 - OpenOCD only works with the latter |
| 17:35.48 | toma^ | ok, that's all I need to know really |
| 17:36.37 | drath | heh, yeah, i suppose you can open the case and look at the chip :) |
| 17:37.11 | toma^ | don't tempt me ;P |
| 17:37.13 | toma^ | I just might |
| 17:38.18 | toma^ | it's not really a problem to get those new turtelizers... I just thought that if I could just use the old jtags without too much of a hassle then it'd be worth the trouble |
| 17:38.35 | ali_as_ | What stops the FT232 device being compatable? |
| 17:39.49 | drath | the FT232 lacks the MPSSE (multi protocol synchronous serial engine), which the OpenOCD uses to drive the JTAG pins |
| 17:40.16 | ali_as_ | But potentially it could be done a slower way? |
| 17:41.44 | drath | it might be possible to bitbang the FT232's pins, but performance would be horrible, i suppose |
| 17:43.20 | ali_as_ | No more so than the performance of the native device anyway though I suppose? |
| 17:44.19 | drath | sorry, not sure what you mean |
| 17:44.36 | ali_as_ | It is already a JTAG interface. |
| 17:46.29 | drath | I know nothing about AVR-JTAG, so I can't say whether they really use "full" jtag |
| 17:48.26 | drath | http://www.avrfreaks.net/index.php?name=PNphpBB2&file=viewtopic&t=56853 |
| 17:48.47 | drath | that link has something on the topic, but they're apparently using the newer FT232RL |